This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a QA Engineer based in Spain. As a QA Engineer, you will play a key role in ensuring the quality, reliability, and performance of innovative fintech products used in complex payment ecosystems. Working within cross-functional product teams, you will take ownership of testing activities across the software development lifecycle, helping deliver seamless user experiences and robust platform functionality. This role combines hands-on manual testing with API validation, exploratory testing, and continuous process improvement in a collaborative, remote-first environment. You will work closely with developers, product managers, and designers to maintain high quality standards while contributing to the evolution of testing practices. This is an excellent opportunity for a detail-oriented professional who thrives in fast-paced environments and is passionate about building reliable financial technology solutions.